Dishwasher installation is a fairly simple process for those who have the time and basic tools to complete it. The first step is to prepare the area for the dishwasher, including shutting off electricity (at the circuit breaker) and water (at the valve under your sink). If you’re replacing an existing dishwasher, it’s best to remove it from its current mounting brackets before beginning your project. After that, you can move the new dishwasher into place and make all the necessary electrical and plumbing connections.
Most of the working parts on a dishwasher–both the electrical and the water supply–are located behind an access panel in the front bottom of the appliance. This can be difficult to work with in a crouch, so it’s often easiest to carefully lay the appliance on its back. It’s also possible to make most of the connections while the dishwasher is still in the cabinet, but it’s better to move it into place and then remove the access panel for final hookups.
The electrical and plumbing connections to the dishwasher are made in a junction box on the front bottom of the appliance. To make these connections, you’ll need to remove the junction box cover, find the three wires connected to the dishwasher and their respective connectors, and use wire nuts to connect incoming ground (green) to green, white to white, and black to black. If your house wiring is sheathed in plastic, you should use a pair of wire strippers to expose the bare copper ends before connecting them. Once all the connections are made, you can replace the junction box cover.
Next, you’ll want to disconnect the drain hose from your sink and garbage disposal, then locate the hole between your sink cabinets where you’ll want to route your new dishwasher drain hose. You’ll need to cut the drain hose to the proper length and thread it into the opening in the under-sink cabinet. It’s important to have a long enough hose to allow you to position the dishwasher correctly over the drain inlet and valve.
If you’re using a new dishwasher, it probably came with a short piece of 90-degree fitting that extends to the back of the unit, and you’ll need to attach this to your hot water line. Your plumber should provide you with a suitable length of tubing that will reach from the hot water valve in your home to this fitting on the back of the dishwasher. It may be necessary to use a tube-bending spring or a small plumber’s tool to shape the tubing in this area.
Once the tubing is in place and the connection to the valve on the dishwasher is secured, you can replace the dishwasher’s access panel cover. After making sure that the appliance is level, you’ll be ready to test it! Just be sure to turn off the electricity at your circuit breaker before testing for safety. And of course, it’s a good idea to run a few loads of laundry before you try washing dishes in the new dishwasher!
source https://flowlinkplumbing.wordpress.com/2023/05/27/dishwasher-installation-basics/
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